Translation guide
The proportion of light reflected by a surface. In Japanese, the scientific term is アルベド, but in everyday contexts, phrases like 反射率 or 光の反射率 are more common.
The standard loanword used in scientific and technical contexts. Directly equivalent to 'albedo'.
The Earth's albedo is about 0.3.
The higher the albedo, the more light it reflects.
Literally 'reflective power'. Used in some scientific contexts, but less common than アルベド.
The albedo of this planet is very low.
The reflectivity of a surface, often discussed in terms of heat or brightness.
Means 'reflectance' or 'reflectivity'. Commonly used in everyday contexts, such as describing the reflectivity of materials.
White paint has high reflectance, so it makes the room brighter.
Specifically 'light reflectance'. Used when emphasizing light rather than other types of radiation.
Use アルベド in scientific papers, astronomy, or climatology. Use 反射率 in everyday conversation about materials, paint, or general reflectivity. 反射率 is more widely understood by non-specialists.
この素材の反射率を測定してください。
Please measure the reflectance of this material.
Snow has a very high light reflectance.